Intracellular chromobody delivery by mesoporous silica nanoparticles for antigen targeting and visualization in real time

Chromobodies have recently drawn great attention as bioimaging nanotools. They offer high antigen binding specificity and affinity comparable to conventional antibodies, but much smaller size and higher stability. Chromobodies can be used in live cell imaging for specific spatio-temporal visualization of cellular processes. To date, functional application of chromobodies requires lengthy genetic manipulation of the target cell. Here, we develop multifunctional large-pore mesoporous silica nanoparticles (MSNs) as nanocarriers to directly transport chromobodies into living cells for antigen-visualization in real time. The multifunctional large-pore MSNs feature high loading capacity for chromobodies, and are efficiently taken up by cells. By functionalizing the internal MSN surface with nitrilotriacetic acid-metal ion complexes, we can control the release of His6-tagged chromobodies from MSNs in acidified endosomes and observe successful chromobody-antigen binding in the cytosol. Hence, by combining the two nanotools, chromobodies and MSNs, we establish a new powerful approach for chromobody applications in living cells.

Medienart:

E-Artikel

Erscheinungsjahr:

2016

Erschienen:

2016

Enthalten in:

Zur Gesamtaufnahme - volume:6

Enthalten in:

Scientific reports - 6(2016) vom: 13. Mai, Seite 25019

Sprache:

Englisch

Beteiligte Personen:

Chiu, Hsin-Yi [VerfasserIn]
Deng, Wen [VerfasserIn]
Engelke, Hanna [VerfasserIn]
Helma, Jonas [VerfasserIn]
Leonhardt, Heinrich [VerfasserIn]
Bein, Thomas [VerfasserIn]

Links:

Volltext

Themen:

7631-86-9
Antibodies
Antigens
Journal Article
Research Support, Non-U.S. Gov't
Silicon Dioxide

Anmerkungen:

Date Completed 18.01.2018

Date Revised 30.03.2022

published: Electronic

Citation Status MEDLINE

doi:

10.1038/srep25019

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM26029652X